This refers to the Publication Date not showing on item level searches where a 264 field has been used. showRDAtag264 element is in in the delivered xslt but no tag is present.
The item search is not using XSLT. The problem is, that you can only map either 260 or 264 to copyrightdate in the Koha-2-MARC-Mappings in older versions, which is used for display. This will be fixed by: bug 10306 and dependencies
Many thanks for the feedback. The rationale behind this came from our vendor following submitted samples of the 260 showing but the 264 not showing.
Result list, detail pages and lists can use XSLT, in other places often the database fields are used for a quick summary display. *** This bug has been marked as a duplicate of bug 10306 ***